编写一个简单计算器，可根据输入运算符，对2个整数进行加减乘除，题目保证输出范围均不超过整型范围

判断运算符，然后进行对应的计算就好。

import java.util.Scanner;
public class Main {
    public static void main(String[] args) {
        Scanner in=new Scanner(System.in);
        String line=in.nextLine();
        String[] s = line.split(" ");
        int num1=Integer.parseInt(s[0]);
        int num2=Integer.parseInt(s[2]);
        switch (s[1]){
            case "+":
                System.out.print(num1+num2);
                break;
            case "-":
                System.out.print(num1-num2);
                break;
            case "*":
                System.out.print(num1*num2);
                break;
            case "/":
                System.out.print(num1/num2);
                break;
            case "%":
                System.out.print(num1%num2);
                break;
            default:
                System.out.print("ERROR");
                break;
        }
    }
}